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circuitry to delay a square wave clock signal

If you want accuracy, and can live with up to 100nsec of jitter (+/-50nsec), get yourself a good cyrstal-controlled 10HMz oscillator, and and use it to clock your square wave through two D-type bistables.

Use an exclusive-OR to compare the outputs of the two D-types, and whenever there's a difference, turn off the clock to the second D-type for 3,000 ticks of the 10MHz clock (for which you will need a 12-bit counter - in the past I would have used a pair of 74HCT40103 binary down counters).

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These days I'd find a programmable logic device with a least 14 latches (which is pretty small).

----------------- Bill Sloman, Nijmegen

Reply to
bill.sloman
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I have a two-edge delay circuit around here somewhere. I'll post it to a.b.s.e when I find it.

...Jim Thompson

--
|  James E.Thompson, P.E.                           |    mens     |
|  Analog Innovations, Inc.                         |     et      |
|  Analog/Mixed-Signal ASIC\'s and Discrete Systems  |    manus    |
|  Phoenix, Arizona            Voice:(480)460-2350  |             |
|  E-mail Address at Website     Fax:(480)460-2142  |  Brass Rat  |
|       http://www.analog-innovations.com           |    1962     |
             
I love to cook with wine.      Sometimes I even put it in the food.
Reply to
Jim Thompson

See...

Newsgroups: alt.binaries.schematics.electronic Subject: Two Edge Delay (from S.E.D) - TwoEdgeDelay.pdf Message-ID:

...Jim Thompson

--
|  James E.Thompson, P.E.                           |    mens     |
|  Analog Innovations, Inc.                         |     et      |
|  Analog/Mixed-Signal ASIC\'s and Discrete Systems  |    manus    |
|  Phoenix, Arizona            Voice:(480)460-2350  |             |
|  E-mail Address at Website     Fax:(480)460-2142  |  Brass Rat  |
|       http://www.analog-innovations.com           |    1962     |
             
I love to cook with wine.      Sometimes I even put it in the food.
Reply to
Jim Thompson

Hi guys,

I am new here and am hoping someone can hep me with my 800Hz clock problem.

I need to time delay a 800Hz square wave signal by 0.3ms. What sort of simple circuitry can I use to time delay my square wave clock signal by this short amount of time?

Thanks,

Phil

Reply to
PhilCBR

You could use an RC low-pass filter followed by schmitt trigger, or, the /Q output of a monostable (for a delayed rising clock edge). It depends how accurate the delay needs to be.

Reply to
Andrew Holme

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